May be i'm late in this discussion, just had thought around ibmjdk8 that
can we add ibm-jdk8 in our travis.yml file for checking builds against it ?
might be helpful to avoid problem we fixed with LANG-1337

I was looking at the way we can do that because the fact that Travis don't
support ibm-jdk8, however proposal is raised [1] so hope we can get it in
future. I also found the workaround till we get it here [2].